Vibrant burger ad featuring a cute green monster, juicy burger, and fries, in a retro collage style

Prompt

Create a vertical poster ad featuring an uploaded character as the main subject. Shoot from a low angle with a wide lens. Use a red, yellow, and white color palette. Include ketchup splash graphics, dripping melted cheese, comic burst shapes, retro American diner typography, and a bold fast food collage aesthetic.